CN111121495A - Double-tube pass and double-shell pass shell-and-tube heat exchanger - Google Patents
Double-tube pass and double-shell pass shell-and-tube heat exchanger Download PDFInfo
- Publication number
- CN111121495A CN111121495A CN201911360069.4A CN201911360069A CN111121495A CN 111121495 A CN111121495 A CN 111121495A CN 201911360069 A CN201911360069 A CN 201911360069A CN 111121495 A CN111121495 A CN 111121495A
- Authority
- CN
- China
- Prior art keywords
- tube
- shell
- double
- discharging
- pass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a double-tube-pass double-shell-pass shell-and-tube heat exchanger, which comprises a furnace body, a water-cooling jacket, a flue and an economizer, wherein a feeding bin and a discharging bin are respectively arranged at two ends of the flue, a plurality of heat exchangers are arranged in the flue, a belt conveyor is arranged at one side of the discharging bin, the heat exchangers comprise a tube shell, two ends of the tube shell are respectively communicated with the feeding bin and the discharging bin, a screw shaft is arranged in the tube shell and is in transmission connection with a motor arranged outside the feeding bin, and the screw shaft is used for solving the problems that the tail gas treatment cost of a thermal desorption device.
Description
Technical Field
The invention relates to a double-tube-pass and double-shell-pass shell-and-tube heat exchanger.
Background
With the development of cities, industrial sites such as steel and iron, chemical industry and the like, solid waste dumps, military bases and the like are moved from urban central areas to other areas, and in the past production process of enterprises, factors such as dumping and discharging of waste, leakage of chemical substances and the like inevitably cause serious site pollution problems. The remediation of these soils is dominated by thermal desorption. In the thermal desorption technology, a direct heating mode and an indirect heating mode are adopted, the direct heating mode is as in the patent CN103495598A, the name is 'an organic contaminated soil remediation method', organic contaminated soil is sent into a roasting chamber, hot gas generated by a combustion furnace enters a heating channel to heat and remediate the organic contaminated soil in the roasting chamber, on one hand, the heating mode is high in the cost of subsequent tail gas treatment, on the other hand, the waste heat is not utilized, and the energy utilization rate is low.
Disclosure of Invention
The invention aims to solve the technical problem of providing a double-tube-pass double-shell-pass shell-and-tube heat exchanger, which is used for solving the problems of high tail gas treatment cost, non-utilization of waste heat and low energy utilization rate of a thermal desorption device.
In order to solve the above problems, the technical solution to be solved by the present invention is:
the shell-and-tube heat exchanger with double tube passes and double shell passes comprises a furnace body, a water-cooling jacket, a flue and an economizer, wherein a feeding bin and a discharging bin are respectively arranged at two ends of the flue, a plurality of heat exchangers are arranged in the flue, a belt conveyor is arranged on one side of the discharging bin, the heat exchangers comprise a tube shell, two ends of the tube shell are respectively communicated with the feeding bin and the discharging bin, a screw shaft is arranged in the tube shell, and the screw shaft is in transmission connection with a motor arranged outside the feeding bin.
The lower end of the discharging bin is communicated with the closed discharging bin, a plurality of discharging pipes are arranged in the discharging bin, the upper end of each discharging pipe is communicated with the discharging bin, the lower end of each discharging pipe is arranged above the belt conveyor, the upper end of each discharging pipe is communicated with a cooling water pipe, and the lower end of each discharging pipe is communicated with a water cooling jacket. The top of the discharging bin is fixedly connected with a vertical partition plate, a plurality of bearing seats are installed on the partition plate, one end of each spiral shaft is connected in each bearing seat, the discharging bin on one side, away from the spiral shafts, of the partition plate is communicated with a waste gas treatment device through an exhaust pipe, and a check valve is installed on the exhaust pipe.
The drying device is characterized by further comprising a rake dryer, the rake dryer is communicated with the feeding bin through the bucket elevator, a steam jacket of the rake dryer is communicated with a steam jacket of the furnace body through a steam pipe, an exhaust pipe of the rake dryer is communicated with waste gas treatment, and a check valve is mounted on the exhaust pipe.
The invention has the technical effects that:
1. the invention carries out thermal desorption repair on the soil moving in the heat exchanger by utilizing the tail gas of boiler combustion, so that the tail gas of the boiler is fully utilized, and meanwhile, the soil is not in direct contact with the hot gas of the combustion furnace, thereby reducing the load of tail gas treatment, reducing the generation of dust and achieving the aim of protecting the environment.
2. The invention can send the organic gas generated in the soil thermal dehydration to the furnace body to participate in combustion, and the organic gas can be decomposed and discharged by combustion, thereby reducing the emission of harmful gas and further protecting the environment.
3. The invention utilizes the steam generated by the furnace body to be sent into the rake dryer, and the rake dryer is utilized to preheat the soil in advance, so that the heat generated by the furnace body is fully utilized.
Drawings
The invention is further described below with reference to the accompanying drawings:
figure 1 is a schematic structural view of the present invention,
FIG. 2 is a schematic cross-sectional view of a flue according to the present invention.
In the figure: the device comprises a belt conveyor 1, a cooling water pipe 2, a discharging pipe 3, an exhaust pipe 4, a discharging bin 5, a partition plate 6, a bearing seat 7, a pipe shell 8, a spiral shaft 9, a feeding bin 10, a motor 11, a bucket elevator 12, a rake dryer 13, an economizer 14, a flue 15, a one-way valve 16, a furnace body 18, a water-cooling jacket 19 and a discharging bin 20.
Detailed Description
As shown in fig. 1 and 2, the double-tube-pass double-shell-pass tube-shell type 8 heat exchanger comprises a furnace body 18, a water-cooling jacket 19, a flue 15 and an economizer 14, wherein a feeding bin 10 and a discharging bin 20 are respectively arranged at two ends of the flue 15, a plurality of heat exchangers are arranged in the flue 15, a belt conveyor 1 is arranged at one side of the discharging bin 20, the heat exchangers comprise tube shells 8, two ends of each tube shell 8 are respectively communicated with the feeding bin 10 and the discharging bin 20, a screw shaft 9 is arranged in each tube shell 8, and the screw shaft 9 is in transmission connection with a motor 11 arranged outside the feeding bin 10.
The using method of the invention comprises the following steps: carry out the broken back feeding storehouse 10 of sending into to contaminated soil through breaker and screening machine, then each motor 11 drive screw axis 9 is rotatory, send into the soil in the tube 8, in the process that soil removed in the tube 8, heat soil by furnace body 18 exhaust flue gas, furnace body 18 flue gas exhaust temperature is more than 500 degrees centigrade, the walking time of soil in the tube 8 is 20 minutes, soil is taken off by effective heating heat, the soil after the heating heat takes off is sent into the discharge bin 20 and is discharged.
The lower end of the discharging bin 20 is communicated with the closed discharging bin 5, a plurality of discharging pipes 3 are arranged in the discharging bin 5, the upper end of each discharging pipe 3 is communicated with the discharging bin 20, the lower end of each discharging pipe is arranged above the belt conveyor 1, the upper end of each discharging pipe 3 is communicated with the cooling water pipe 2, and the lower end of each discharging pipe is communicated with the water cooling jacket 19. The top of the discharging bin 20 is fixedly connected with a vertical partition plate 6, the partition plate 6 is provided with a plurality of bearing seats 7, one end of each spiral shaft 9 is connected in each bearing seat 7 in a shaft mode, the discharging bin 20 on the side, far away from the spiral shafts 9, of the partition plate 6 is communicated with a waste gas treatment device through an exhaust pipe 4, and the exhaust pipe 4 is provided with a one-way valve 16.
The temperature of the soil discharged by the discharging bin 20 is high, so that the hot soil gas is discharged into the air, and in order to solve the problem, the closed discharging bin 5 is arranged, and the discharged soil is quickly cooled and the discharged hot soil gas is reduced by feeding cooling water into the discharging bin 5; in addition, hot gas generated by discharging soil in the discharging bin 20 is sent into the furnace body 18 for residual combustion, and cooling water subjected to heat exchange in the discharging bin 5 is sent into a boiler jacket for heating, so that the heat of the furnace body 18 is fully utilized; wherein the function of the one-way valve 16 is to prevent the furnace body from tempering; the residence time of the soil in the discharge conduit 3 can be adjusted by controlling the conveyor speed of the belt conveyor 1.
The device also comprises a rake dryer 13, wherein the rake dryer 13 is communicated with the feeding bin 10 through a bucket elevator 12, a steam jacket of the rake dryer 13 is communicated with a steam jacket of a furnace body 18 through a steam pipe, an exhaust pipe 4 of the rake dryer 13 is communicated with waste gas treatment, and a check valve 16 is arranged on the exhaust pipe 4.
The furnace body 18 burns the jacket to produce steam and sends the steam into the rake dryer 13, the rake dryer 13 is used for preheating soil, and then the soil which is just preheated is sent into the rake dryer 13 for heating through the bucket elevator 12, so that the heat produced by the furnace body 18 is fully utilized.
Claims (4)
1. Double-tube-pass and double-shell-pass shell-and-tube heat exchanger comprises a furnace body (18), a water-cooling jacket (19), a flue (15) and an economizer (14), and is characterized in that: flue (15) both ends are equipped with feeding storehouse (10) and dummy discharge bin (20) respectively, are equipped with many heat exchangers in flue (15), are equipped with band conveyer (1) in dummy discharge bin (20) one side, the heat exchanger includes tube (8), and tube (8) both ends communicate feeding storehouse (10) and dummy discharge bin (20) respectively, are equipped with screw axis (9) in tube (8), and screw axis (9) are connected with motor (11) transmission installed outside feeding storehouse (10).
2. A double tube pass, double shell pass, shell and tube heat exchanger according to claim 1, characterized in that: the lower end of the discharging bin (20) is communicated with the closed discharging bin (5), a plurality of discharging pipes (3) are arranged in the discharging bin (5), the upper end of each discharging pipe (3) is communicated with the discharging bin (20), the lower end of each discharging pipe is arranged above the belt conveyor (1), the upper end of each discharging pipe (3) is communicated with the cooling water pipe (2), and the lower end of each discharging pipe is communicated with the water cooling jacket (19).
3. A double tube-pass, double shell-and-tube heat exchanger according to claim 1 or 2, characterized in that: the vertical partition plate (6) is fixedly connected to the top of the discharging bin (20), a plurality of bearing seats (7) are installed on the partition plate (6), one end of each spiral shaft (9) is connected in each bearing seat (7) in a shaft mode, the discharging bin (20) on one side, away from the spiral shafts (9), of the partition plate (6) is communicated with the furnace body (18) through the exhaust pipe (4), and the check valve (16) is installed on the exhaust pipe (4).
4. A double tube-pass, double shell-and-tube heat exchanger according to claim 1 or 2, characterized in that: the drying device is characterized by further comprising a rake dryer (13), wherein the rake dryer (13) is communicated with the feeding bin (10) through a bucket elevator (12), a steam jacket of the rake dryer (13) is communicated with a furnace body (18) water cooling jacket through a steam pipe, an exhaust pipe (4) of the rake dryer (13) is communicated with the furnace body (18), and a one-way valve (16) is installed on the exhaust pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911360069.4A CN111121495A (en) | 2019-12-25 | 2019-12-25 | Double-tube pass and double-shell pass shell-and-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911360069.4A CN111121495A (en) | 2019-12-25 | 2019-12-25 | Double-tube pass and double-shell pass shell-and-tube heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111121495A true CN111121495A (en) | 2020-05-08 |
Family
ID=70502480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911360069.4A Pending CN111121495A (en) | 2019-12-25 | 2019-12-25 | Double-tube pass and double-shell pass shell-and-tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111121495A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006150176A (en) * | 2004-11-26 | 2006-06-15 | Nikko Co Ltd | Heating purification equipment for contaminated soil |
| KR20120103790A (en) * | 2011-03-11 | 2012-09-20 | 에이치투더블유티이 주식회사 | Treating method of buried livestock to prevent soil pollution |
| CN204769860U (en) * | 2015-03-18 | 2015-11-18 | 江苏盖亚环境工程有限公司 | Pollute soil thermal desorption repair system |
| CN206736169U (en) * | 2017-02-13 | 2017-12-12 | 无锡爱普特设备科技有限公司 | A kind of energy-efficient indirect thermal desorption carbonizing apparatus |
| CN208840201U (en) * | 2018-06-01 | 2019-05-10 | 中冶节能环保有限责任公司 | A kind of device for the indirect thermal desorption renovation of organic pollution soil that efficient energy level gradient utilizes |
| CN208960609U (en) * | 2018-03-21 | 2019-06-11 | 郑州恒之博新能源科技有限公司 | A kind of pyrolysis system for rehabilitating soil |
-
2019
- 2019-12-25 CN CN201911360069.4A patent/CN111121495A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006150176A (en) * | 2004-11-26 | 2006-06-15 | Nikko Co Ltd | Heating purification equipment for contaminated soil |
| KR20120103790A (en) * | 2011-03-11 | 2012-09-20 | 에이치투더블유티이 주식회사 | Treating method of buried livestock to prevent soil pollution |
| CN204769860U (en) * | 2015-03-18 | 2015-11-18 | 江苏盖亚环境工程有限公司 | Pollute soil thermal desorption repair system |
| CN206736169U (en) * | 2017-02-13 | 2017-12-12 | 无锡爱普特设备科技有限公司 | A kind of energy-efficient indirect thermal desorption carbonizing apparatus |
| CN208960609U (en) * | 2018-03-21 | 2019-06-11 | 郑州恒之博新能源科技有限公司 | A kind of pyrolysis system for rehabilitating soil |
| CN208840201U (en) * | 2018-06-01 | 2019-05-10 | 中冶节能环保有限责任公司 | A kind of device for the indirect thermal desorption renovation of organic pollution soil that efficient energy level gradient utilizes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109078976B (en) | Thermal desorption device, thermal desorption restoration system and contaminated soil thermal desorption restoration method | |
| CN100557312C (en) | A kind of sludge desiccation burning integral treatment method and device | |
| KR100935446B1 (en) | Method of device for high water content of drying and carbonizing | |
| CN101530858A (en) | Soil pollution thermal desorption restoration processing system | |
| CN101813316A (en) | Municipal sludge drying and incineration system and treatment process thereof | |
| CN102840587A (en) | Compound method and system for directly recovering heat inside and outside rotary kiln | |
| CN205650605U (en) | Restore organic contaminated soil's sectional type heating, modularization thermal desorption equipment | |
| CN103424001A (en) | High-temperature material vertical cooler and waste heat using system | |
| CN206094112U (en) | Sludge incineration system | |
| CN101629722B (en) | Pesticide waste residue fluidized bed incinerating process and pesticide waste residue fluidized bed incinerating device | |
| CN202485474U (en) | Rapid processing device for rotary kiln ring forming | |
| CN111423092A (en) | Integrated sludge drying and incineration or carbonization treatment system | |
| CN111167847A (en) | Novel ex-situ thermal desorption method and system for efficiently utilizing waste heat in cascade mode | |
| CN112658022B (en) | Indirect thermal desorption soil remediation device and method for heat pipe enhanced heat storage | |
| CN213356970U (en) | Carbonization material production system based on DCS control | |
| CN211823882U (en) | High-temperature pellet cooling treatment device | |
| KR100935447B1 (en) | High water content of drying device | |
| CN111121495A (en) | Double-tube pass and double-shell pass shell-and-tube heat exchanger | |
| CN107639110A (en) | A kind of device for repairing polluted soil | |
| CN109456778B (en) | Novel device and method for superheated steam continuous anaerobic carbonization cracking furnace | |
| CN114042743A (en) | Fused salt circulating ex-situ indirect thermal desorption soil remediation system and method | |
| CN209736327U (en) | Polluted soil ex-situ thermal desorption system | |
| CN102589312A (en) | Device for rapidly treating ring formation of rotary kiln and method | |
| KR100933438B1 (en) | High water content of carbonizing device | |
| CN108203748B (en) | Slag treatment process and device by explosion method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200508 |
|
| RJ01 | Rejection of invention patent application after publication |